I have an issue where my arms go sorta tingly and numb after about 25 chair dips. I can still do reps afterward (have gone up to 42) however my arms feel really weird doing it. Nothing like they normally do after I am getting tired from push ups.
It is worth noting that that point of 25 has been slowly going higher, but at a much slower rate than my maximum reps is going up.
What could be going on here? How can I make it better?